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Artizzu F, Pilia L, Serpe A, Mara D, Casula MF, Marchiò L, Deplano P. Anion-Induced Structural Diversity and Optical Chromism in a Series of Cyano-Bridged Heterometallic 3 d-4 f Coordination Polymers. Molecules 2023; 28:molecules28062871. [PMID: 36985846 PMCID: PMC10056676 DOI: 10.3390/molecules28062871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 03/18/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
The self-assembly reaction of the neutral dicyano-bis(1,10-phenanthroline) iron(II) complex with lanthanide ions (Ln = Eu(III), Gd(III), Er(III)) provided two different classes of heterometallic cyano-bridged 3d-4f architectures depending on the nature of the counteranion, irrespective of the size of the 4f metal ion. Tetranuclear oligomers with a squared Fe2Ln2 core were isolated when using nitrate salts, whereas unusual 1D polymeric chains were obtained when resorting to triflate salts under the same synthetic conditions. It is shown that the different structural motifs have a remarkable impact on the thermal stability and the optical properties of the compounds, which display a notable optical ipsochromism of the parent Fe(II) complex upon coordination with the Ln ion. This effect is significantly more pronounced in the polymeric chain than in the Fe2Ln2 oligomer both in solution and in the solid state. Structural evidence suggests that this behavior is likely related to the geometry of the CN-Ln bridge. On the other hand, more extended π-stacking interactions in the oligomer give rise to a broad charge-transfer absorption (600-1500 nm), making this compound promising as NIR absorber. Density Functional Theory calculations and electrochemical studies demonstrate that the observed negative chromism originates from the stabilization of a mixed metal/cyanide character HOMO with respect to a phenanthroline-centered LUMO.
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Affiliation(s)
- Flavia Artizzu
- Dipartimento per lo Sviluppo Sostenibile e la Transizione Ecologica (DiSSTE), Università del Piemonte Orientale "A. Avogadro", Piazza S. Eusebio 5, 13100 Vercelli, Italy
| | - Luca Pilia
- Dipartimento di Ingegneria Meccanica Chimica e dei Materiali, Università di Cagliari, Via Marengo 2, 09123 Cagliari, Italy
| | - Angela Serpe
- Dipartimento di Ingegneria Civile, Ambientale e Architettura, INSTM Research Unit, Università di Cagliari, Via Marengo 2, 09123 Cagliari, Italy
| | - Dimitrije Mara
- Institute of General and Physical Chemistry, Studentski Trg 12/V, 11158 Belgrade, Serbia
| | - Maria Francesca Casula
- Dipartimento di Ingegneria Meccanica Chimica e dei Materiali, Università di Cagliari, Via Marengo 2, 09123 Cagliari, Italy
| | - Luciano Marchiò
- Dipartimento SCVSA, Università di Parma, Parco Area delle Scienze 17/a, 43124 Parma, Italy
| | - Paola Deplano
- Dipartimento di Ingegneria Civile, Ambientale e Architettura, INSTM Research Unit, Università di Cagliari, Via Marengo 2, 09123 Cagliari, Italy
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2
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Espa D, Pilia L, Artizzu F, Serpe A, Deplano P, Marchiò L. Near-IR Absorbers Based on Pt(II)-Dithiolene Donor–Acceptor Charge-Transfer (CT) Systems: A Structural Analysis to Highlight DA Interactions. Molecules 2023; 28:molecules28062566. [PMID: 36985538 PMCID: PMC10052144 DOI: 10.3390/molecules28062566] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 03/07/2023] [Accepted: 03/08/2023] [Indexed: 03/16/2023] Open
Abstract
The packing interactions of a series of electron donor (D) and electron acceptor (A) charge transfer (CT) near-IR absorbers based on platinum-dithiolene complexes are reinvestigated here as a case study also by using the Hirshfeld surface analysis. This analysis on systems, which exhibit the 1:1, 2:1 and 2:2 columnar stacking patterns between D and A, allows us to point out that several interactions of atoms and fragments are involved in the stacking interactions but also that only a limited fraction of these interactions, limited to the 1:1 D/A columnar stacking case, can be relatable to the absorption features of this class of compounds.
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Affiliation(s)
- Davide Espa
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, Unità di Ricerca dell’INSTM, S.S. 554-Bivio per Sestu, 09042 Cagliari, Italy
| | - Luca Pilia
- Dipartimento di Ingegneria Meccanica Chimica e dei Materiali, Università di Cagliari, Via Marengo 2, 09123 Cagliari, Italy
- Correspondence: (L.P.); (P.D.); (L.M.)
| | - Flavia Artizzu
- Dipartimento per lo Sviluppo Sostenibile e la Transizione Ecologica (DiSSTE), Università del Piemonte Orientale “A. Avogadro”, Piazza S. Eusebio 5, 13100 Vercelli, Italy
| | - Angela Serpe
- Dipartimento di Ingegneria Civile, Ambientale e Architettura, INSTM Research Unit, Università di Cagliari, Via Marengo 2, 09123 Cagliari, Italy
- Istituto di Geologia Ambientale e Geoingegneria, Consiglio Nazionale delle Ricerche (IGAG-CNR), Via Marengo 2, 09123 Cagliari, Italy
| | - Paola Deplano
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, Unità di Ricerca dell’INSTM, S.S. 554-Bivio per Sestu, 09042 Cagliari, Italy
- Dipartimento di Ingegneria Civile, Ambientale e Architettura, INSTM Research Unit, Università di Cagliari, Via Marengo 2, 09123 Cagliari, Italy
- Correspondence: (L.P.); (P.D.); (L.M.)
| | - Luciano Marchiò
- Dipartimento di Scienze Chimiche della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/a, 43124 Parma, Italy
- Correspondence: (L.P.); (P.D.); (L.M.)
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3
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Rizzato S, Manca G, Lemée MH, Marchiò L, Cesare Marincola F, Guerri A, Ienco A, Serpe A, Deplano P. Halogen-Bonding-Mediated Radical Reactions: The Unexpected Behavior of Piperazine-Based Dithiooxamide Ligands in the Presence of Diiodine. Inorg Chem 2023; 62:694-705. [PMID: 36602377 PMCID: PMC9846695 DOI: 10.1021/acs.inorgchem.2c02340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
N,N'-Dialkylpiperazine-2,3-dithiones (R2pipdt) were recognized as a class of hexa-atomic cyclic dithiooxamide ligands with peculiar charge-transfer donor properties toward soft electron-acceptors such as noble metal cations and diiodine. The latter interaction is nowadays better described as halogen bonding. In the reaction with diiodine, R2pipdt unexpectedly provides the corresponding triiodide salts, differently from the other dithiooxamides, which instead typically achieve ligand·nI2 halogen-bonded adducts. In this paper, we report a combined experimental and theoretical study that allows elucidation of the nature of the cited products and the reasons behind the unpredictable behavior of these ligands. Specifically, low-temperature single-crystal X-ray diffraction measurements on a series of synthetically obtained R2pipdt (R = Me, iPr, Bz)/I3 salts, complemented by neutron diffraction experiments, were able to experimentally highlight the formation of [R2pipdtH]+ cations with a -S-H bond on the dithionic moiety. Differently, with R = Ph, a benzothiazolylium cation, resulting from an intramolecular condensation reaction of the ligand, is obtained. Based on density functional theory (DFT) calculations, a reasonable reaction mechanism where diiodine plays the fundamental role of promoting a halogen-bonding-mediated radical reaction has been proposed. In addition, the comparison of combined experimental and computational results with the corresponding reactions of N,N'-dialkylperhydrodiazepine-2,3-dithione (R2dazdt, a hepta-atomic cyclic dithiooxamide), which provide neutral halogen-bonded adducts, pointed out that the difference in the torsion angle of the free ligands represents the structural key factor in determining the different reactivities of the two systems.
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Affiliation(s)
- Silvia Rizzato
- Dipartimento
di Chimica, Università degli Studi
di Milano, Via Golgi 19, I-20133 Milano, Italy
| | - Gabriele Manca
- Istituto
di Chimica dei Composti Organometallici ICCOM-CNR, Via Madonna del Piano 10, I-50019 Sesto Fiorentino, Florence, Italy
| | - Marie-Hélène Lemée
- Institut
Laue-Langevin, 71 avenue des Martyrs, CS 20156, 38042 Grenoble Cedex 9, France
| | - Luciano Marchiò
- Dipartimento
di Chimica, Scienze della Vita e della Sostenibilità Ambientale, Università di Parma, 43124 Parma, Italy
| | - Flaminia Cesare Marincola
- Dipartimento
di Scienze Chimiche e Geologiche, Università
di Cagliari, 09042 Monserrato, Cagliari, Italy
| | - Annalisa Guerri
- Dipartimento
di Chimica “Ugo Schiff”, Università
di Firenze, Via della
Lastruccia 3, 50019 Sesto Fiorentino, Firenze, Italy
| | - Andrea Ienco
- Istituto
di Chimica dei Composti Organometallici ICCOM-CNR, Via Madonna del Piano 10, I-50019 Sesto Fiorentino, Florence, Italy,
| | - Angela Serpe
- Dipartimento
di Ingegneria Civile, Ambientale e Architettura (DICAAR) and Research
Unit of INSTM, Università di Cagliari, I-09042 Monserrato, Cagliari, Italy,Istituto
di Geologia Ambientale e Geoingegneria del Consiglio Nazionale delle
Ricerche (IGAG-CNR), Piazza d’Armi, 09123 Cagliari, Italy,
| | - Paola Deplano
- Dipartimento
di Scienze Chimiche e Geologiche, Università
di Cagliari, 09042 Monserrato, Cagliari, Italy,Dipartimento
di Ingegneria Civile, Ambientale e Architettura (DICAAR) and Research
Unit of INSTM, Università di Cagliari, I-09042 Monserrato, Cagliari, Italy
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4
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McCarthy S, Desaunay O, Jie ALW, Hassatzky M, White AJP, Deplano P, Braddock DC, Serpe A, Wilton-Ely JDET. Homogeneous Gold Catalysis Using Complexes Recovered from Waste Electronic Equipment. ACS Sustain Chem Eng 2022; 10:15726-15734. [PMID: 36507095 PMCID: PMC9727779 DOI: 10.1021/acssuschemeng.2c04092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 11/02/2022] [Indexed: 06/17/2023]
Abstract
Despite the greater awareness of elemental sustainability and the benefits of the circular economy concept, much waste electrical and electronic equipment (WEEE) is still destined for landfill. Effective methods for valorizing this waste within our society are therefore imperative. In this contribution, two gold(III) complexes obtained as recovery products from WEEE and their anion metathesis products were investigated as homogenous catalysts. These four recovery products were successfully applied as catalysts for the cyclization of propargylic amides and the condensation of acetylacetone with o-iodoaniline. Impressive activity was also observed in the gold-catalyzed reaction between electron-rich arenes (2-methylfuran, 1,3-dimethoxybenzene, and azulene) and α,β-unsaturated carbonyl compounds (methyl vinyl ketone and cyclohexenone). These recovered compounds were also shown to be effective catalysts for the oxidative cross-coupling reaction of aryl silanes and arenes. When employed as Lewis acid catalysts for carbonyl-containing substrates, the WEEE-derived gold complexes could also be recovered at the end of the reaction and reused without loss in catalytic activity, enhancing still further the sustainability of the process. This is the first direct application in homogeneous catalysis of gold recovery products sourced from e-waste.
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Affiliation(s)
- Sean McCarthy
- Department
of Chemistry, Imperial College, Molecular Sciences Research Hub,
White City Campus, London W12 0BZ, U.K.
| | - Oriane Desaunay
- Department
of Chemistry, Imperial College, Molecular Sciences Research Hub,
White City Campus, London W12 0BZ, U.K.
| | - Alvin Lee Wei Jie
- Department
of Chemistry, Imperial College, Molecular Sciences Research Hub,
White City Campus, London W12 0BZ, U.K.
| | - Maximilian Hassatzky
- Department
of Chemistry, Imperial College, Molecular Sciences Research Hub,
White City Campus, London W12 0BZ, U.K.
| | - Andrew J. P. White
- Department
of Chemistry, Imperial College, Molecular Sciences Research Hub,
White City Campus, London W12 0BZ, U.K.
| | - Paola Deplano
- Department
of Chemical and Soil Sciences, University
of Cagliari, Monserrato, 09042 Cagliari, Italy
| | - D. Christopher Braddock
- Department
of Chemistry, Imperial College, Molecular Sciences Research Hub,
White City Campus, London W12 0BZ, U.K.
| | - Angela Serpe
- Department
of Civil and Environmental Engineering and Architecture (DICAAR),
INSTM Unit, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy
- Environmental
Geology and Geoengineering Institute of the National Research Council
(IGAG-CNR), Via Marengo
2, 09123 Cagliari, Italy
| | - James D. E. T. Wilton-Ely
- Department
of Chemistry, Imperial College, Molecular Sciences Research Hub,
White City Campus, London W12 0BZ, U.K.
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Artizzu F, Marchiò L, Pilia L, Serpe A, Deplano P. Heteroleptic Co(III) bisdithiocarbamato-dithione complexes: Synthesis, structure and bonding of [Co(Et 2dtc) 2(R 2pipdt)]BF 4 (R = Me, 1; Ph, 2; pipdt = piperazin-2,3-dithione) complexes. J COORD CHEM 2022. [DOI: 10.1080/00958972.2022.2126770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Flavia Artizzu
- Dipartimento di Sviluppo Sostenibile e Transizione Ecologica (DISSTE), Università del Piemonte Orientale, Vercelli, Italy
| | | | - Luca Pilia
- Dipartimento di Ingegneria Meccanica, Chimica e dei Materiali, Università di Cagliari, Cagliari, Italy
| | - Angela Serpe
- Dipartimento di Ingegneria Civile, INSTM Research Unit, Università di Cagliari, Cagliari, Italy
- Istituto di Geologia Ambientale e Geoingegneria, Consiglio Nazionale delle Ricerche (IGAG-CNR), Cagliari, Italy
| | - Paola Deplano
- Dipartimento di Ingegneria Civile, INSTM Research Unit, Università di Cagliari, Cagliari, Italy
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, Monserrato, Italy
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6
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Artizzu F, Espa D, Marchiò L, Pilia L, Serpe A, Deplano P. Progress and perspectives on strategies to control photochemical properties in Metallo-Dithiolene Donor-Acceptor systems. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2021.120731] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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7
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Serpe A, Pilia L, Balestri D, Marchiò L, Deplano P. Characterization and Structural Insights of the Reaction Products by Direct Leaching of the Noble Metals Au, Pd and Cu with N, N'-Dimethyl-piperazine-2,3-dithione/I 2 Mixtures. Molecules 2021; 26:4721. [PMID: 34443309 PMCID: PMC8400658 DOI: 10.3390/molecules26164721] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 07/28/2021] [Accepted: 08/01/2021] [Indexed: 11/16/2022] Open
Abstract
In the context of new efficient and safe leaching agents for noble metals, this paper describes the capability of the Me2pipdt/I2 mixture (where Me2pipdt = N,N'-dimethyl-piperazine-2,3-dithione) in organic solutions to quantitatively dissolve Au, Pd, and Cu metal powders in mild conditions (room temperature and pressure) and short times (within 1 h in the reported conditions). A focus on the structural insights of the obtained coordination compounds is shown, namely [AuI2(Me2pipdt)]I3 (1), [Pd(Me2pipdt)2]I2 (2a) and [Cu(Me2pipdt)2]I3 (3), where the metals are found, respectively, in 3+, 2+ and 1+ oxidation states, and of [Cu(Me2pipdt)2]BF4 (4) and [Cu(Me2dazdt)2]I3 (5) (Me2dazdt = N,N'-dimethyl-perhydrodizepine-2,3-dithione) compared with 3. Au(III) and Pd(II) (d8 configuration) form square-planar complexes, whereas Cu(I) (d10) forms tetrahedral complexes. Density functional theory calculations performed on the cationic species of 1-5 help to highlight the nature of the bonding in the different complexes. Finally, the valorization of the noble metals-rich leachates is assessed. Specifically, gold metal is quantitatively recovered from the solution besides the ligands, showing the potential of these systems to promote metal recycling processes.
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Affiliation(s)
- Angela Serpe
- Department of Civil and Environmental Engineering and Architecture, INSTM Unit, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy
- Environmental Geology and Geoengineering Institute of the National Research Council (IGAG-CNR), Via Marengo 2, 09123 Cagliari, Italy
| | - Luca Pilia
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Via Marengo 2, 09123 Cagliari, Italy;
| | - Davide Balestri
- Department of Chemical, Life and Environmental Sustainability Sciences, University of Parma, 43124 Parma, Italy;
| | - Luciano Marchiò
- Department of Chemical, Life and Environmental Sustainability Sciences, University of Parma, 43124 Parma, Italy;
| | - Paola Deplano
- Department of Chemical and Soil Sciences, University of Cagliari, Monserrato, 09042 Cagliari, Italy
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Attar SS, Pilia L, Espa D, Artizzu F, Serpe A, Pizzotti M, Marinotto D, Marchiò L, Deplano P. Insight into the Properties of Heteroleptic Metal Dithiolenes: Multistimuli Responsive Luminescence, Chromism, and Nonlinear Optics. Inorg Chem 2021; 60:9332-9344. [PMID: 34115489 DOI: 10.1021/acs.inorgchem.1c00023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A comprehensive investigation of the functional properties of heteroleptic donor-M-acceptor dithiolene complexes Bu4N[MII(L1)(L2)] is presented (M = Pd, Pt). The acceptor L1 consists of the chiral (R)-(+)α-methylbenzyldithiooxamidate ((R)-α-MBAdto), the donor L2 is 2-thioxo-1,3-dithiole-4,5-dithiolato (dmit) in 1 (Pd) and 2 (Pt), 1,2-dicarbomethoxyethylenedithiolate (ddmet) in 3 (Pd) and 4 (Pt), or [4',5':5,6][1,4]dithiino[2,3-b]quinoxaline-1',3'-dithiolato (quinoxdt) in 5 (Pd) and 6 (Pt). L1 is capable of undergoing proton exchange and promoting crystal formation in noncentrosymmetric space groups. L2 has different molecular structures while it maintains similar electron-donating capabilities. Thanks to the synergy of the ligands, 1-6 behave as H+ and Ag+ switchable linear chromophores. Moreover, the compounds exhibit a H+-switchable second-order NLO response in solution, which is maintained in the bulk for 1, 3, and 4 when they are embedded into a PMMA poled matrix. 5 and 6 show unique anti-Kasha H+ and Ag+ tunable colored emission originating from the quinoxdt ligand. A correlation between the electronic structure and properties is shown through density functional theory (DFT) and time-dependent DFT calculations.
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Affiliation(s)
- Salahuddin S Attar
- Department of Chemical and Soil Sciences, INSTM Research Unit, University of Cagliari, 09042 Monserrato, Cagliari, Italy
| | - Luca Pilia
- Dipartimento di Ingegneria Meccanica, Chimica e dei Materiali, Università di Cagliari, Via Marengo 2, 09123 Cagliari, Italy
| | - Davide Espa
- Department of Chemical and Soil Sciences, INSTM Research Unit, University of Cagliari, 09042 Monserrato, Cagliari, Italy
| | - Flavia Artizzu
- L3-Luminescent Lanthanide Lab, Department of Chemistry, Ghent University Krijgslaan 281, Building S3, B-9000 Gent, Belgium
| | - Angela Serpe
- Dipartimento di Ingegneria Civile, Ambientale e Architettura, INSTM Research Unit, Università di Cagliari, Via Marengo 2, 09123 Cagliari, Italy
| | - Maddalena Pizzotti
- Department of Chemistry, INSTM Research Unit, University of Milan Via C. Golgi 19, 20133 Milano, Italy
| | - Daniele Marinotto
- CNR-SCITEC, Centro di eccellenza CIMAINA, Via C. Golgi 19, 20133 Milano, Italy
| | - Luciano Marchiò
- Dipartimento SCVSA, Università di Parma, Parco Area delle Scienze 17/a, 43124 Parma, Italy
| | - Paola Deplano
- Department of Chemical and Soil Sciences, INSTM Research Unit, University of Cagliari, 09042 Monserrato, Cagliari, Italy
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Gazzetto M, Artizzu F, Attar SS, Marchiò L, Pilia L, Rohwer EJ, Feurer T, Deplano P, Cannizzo A. Anti-Kasha Conformational Photoisomerization of a Heteroleptic Dithiolene Metal Complex Revealed by Ultrafast Spectroscopy. J Phys Chem A 2020; 124:10687-10693. [PMID: 33320003 DOI: 10.1021/acs.jpca.0c07794] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We investigated the anti-Kasha photochemistry and anti-Kasha emission of d8-metal donor-acceptor dithiolene with femtosecond UV-vis transient absorption spectroscopy and molecular modeling. Experimentally, we found a lifetime of 1.4 ps for higher excited states, which is exceptionally long when compared to typical values for internal conversion (IC) (10 s of fs or less). Consequently, a substantial emission originates from the second excited state. Molecular modeling suggests this to be a consequence of the spatially separated molecular orbitals of the first and second excited states, which gives a charge transfer character to the IC. More surprisingly, we found that the inherent flexibility of the molecule allows the metal complex to access different configurations depending on the photoexcited state. We believe that this unique manifestation of anti-Kasha photoinduced conformational isomerization is facilitated by the exceptionally long lifetime of the second excited state.
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Affiliation(s)
- Michela Gazzetto
- Institute of Applied Physics, University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
| | - Flavia Artizzu
- L3-Luminescent Lanthanide Lab, Department of Chemistry, Ghent University, Krijgslaan 281-Building S3, B-9000 Gent, Belgium
| | - Salahuddin S Attar
- Department of Chemical and Soil Sciences, University of Cagliari, 09042 Monserrato, Cagliari, Italy
| | - Luciano Marchiò
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/a, 43124 Parma, Italy
| | - Luca Pilia
- Dipartimento di Ingegneria Meccanica, Chimica e dei Materiali, Università di Cagliari, Via Marengo 2, 09123 Cagliari, Italy
| | - Egmont J Rohwer
- Institute of Applied Physics, University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
| | - Thomas Feurer
- Institute of Applied Physics, University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
| | - Paola Deplano
- Department of Chemical and Soil Sciences, University of Cagliari, 09042 Monserrato, Cagliari, Italy
| | - Andrea Cannizzo
- Institute of Applied Physics, University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
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Spitsyna N, Ovanesyan N, Blagov M, Krapivin V, Lobach A, Dmitriev A, Simonov S, Zorina L, Pilia L, Deplano P, Vasiliev A, Maximova O, Yagubskii E. Multi‐Magnetic Properties of a Novel SCO [Fe(3‐OMe‐Sal
2
trien)][Fe(tdas)
2
]·CH
3
CN Salt. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000873] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Nataliya Spitsyna
- Institute of Problems of Chemical Physics, RAS 142432 Chernogolovka MD Russia
| | - Nikolay Ovanesyan
- Institute of Problems of Chemical Physics, RAS 142432 Chernogolovka MD Russia
| | - Maxim Blagov
- Institute of Problems of Chemical Physics, RAS 142432 Chernogolovka MD Russia
- Lomonosov Moscow State University 119991 Moscow Russia
| | - Vladimir Krapivin
- Institute of Problems of Chemical Physics, RAS 142432 Chernogolovka MD Russia
| | - Anatolii Lobach
- Institute of Problems of Chemical Physics, RAS 142432 Chernogolovka MD Russia
| | - Alexei Dmitriev
- Institute of Problems of Chemical Physics, RAS 142432 Chernogolovka MD Russia
| | - Sergey Simonov
- Institute of Solid State Physics, RAS 142432 Chernogolovka MD Russia
| | - Leokadiya Zorina
- Institute of Solid State Physics, RAS 142432 Chernogolovka MD Russia
| | - Luca Pilia
- Dipartimento di Ingegneria Meccanica, Chimica e dei Materiali Università di Cagliari via Marengo 2, I 09123 Cagliari Italy
| | - Paola Deplano
- Dipartimento di Fisica INSTM Research Unit University of Cagliari Monserrato 09042 Cagliari Italy
| | - Alexander Vasiliev
- Lomonosov Moscow State University 119991 Moscow Russia
- National Research South Ural State University 454080 Chelyabinsk Russia
| | - Olga Maximova
- Lomonosov Moscow State University 119991 Moscow Russia
- National University of Science and Technology "MISIS" 119991 Moscow Russia
| | - Eduard Yagubskii
- Institute of Problems of Chemical Physics, RAS 142432 Chernogolovka MD Russia
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Attar SS, Marchiò L, Pilia L, Casula MF, Espa D, Serpe A, Pizzotti M, Marinotto D, Deplano P. Design of nickel donor–acceptor dithiolenes for 2nd order nonlinear optics: an experimental and computational study. NEW J CHEM 2019. [DOI: 10.1039/c9nj02976a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This study, concerning the influence on the NLO properties of a remote functionality in the donor of D–Ni–A dithiolenes 1–4, allows to point out the relationship between NLO properties and the donor capability in modulating the low-energy absorption.
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Affiliation(s)
- Salahuddin S. Attar
- Texas A&M University at Qatar (TAMUQ)
- Texas A&M Engineering Building
- Education City
- Doha
- Qatar
| | - Luciano Marchiò
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale
- Università di Parma
- Parma
- Italy
| | - Luca Pilia
- Dipartimento di Ingegneria Meccanica
- Chimica e dei Materiali
- Università di Cagliari
- Cagliari
- Italy
| | - Maria F. Casula
- Dipartimento di Ingegneria Meccanica
- Chimica e dei Materiali
- Università di Cagliari
- Cagliari
- Italy
| | - Davide Espa
- Dipartimento di Fisica
- INSTM Research Unit
- Università di Cagliari
- Monserrato
- Italy
| | - Angela Serpe
- Dipartimento di Ingegneria Civile
- Ambientale e Archittetura
- Università di Cagliari
- Cagliari
- Italy
| | - Maddalena Pizzotti
- Department of Chemistry
- INSTM Research Unit
- University of Milan
- 20133 Milano
- Italy
| | - Daniele Marinotto
- ISTM-CNR
- Centro CIMAINA dell’Università degli Studi di Milano e UdR dell'INSTM
- 20133 Milano
- Italy
| | - Paola Deplano
- Dipartimento di Fisica
- INSTM Research Unit
- Università di Cagliari
- Monserrato
- Italy
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12
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Attar SS, Artizzu F, Marchiò L, Espa D, Pilia L, Casula MF, Serpe A, Pizzotti M, Orbelli-Biroli A, Deplano P. Uncommon Optical Properties and Silver-Responsive Turn-Off/On Luminescence in a Pt II Heteroleptic Dithiolene Complex. Chemistry 2018; 24:10503-10512. [PMID: 29767426 DOI: 10.1002/chem.201801697] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Indexed: 11/10/2022]
Abstract
Complex [Pt(iPr2 pipdt)(Quinoxdt)] (iPr2 pipdt=1,4-diisopropyl-piperazine-2,3-dithione; Quinoxdt=[1,4]dithiino[2,3-b]quinoxaline-2,3-dithiolate) exhibits a remarkable green emission at 570 nm (room temperature), which is above the lowest excited state. The complex is characterized by negative solvatochromism as well as a high second-order polarizability. Addition of AgI ions induces 1) hypsochromic shift of the lowest frequencies and 2) reversible quenching of luminescence. The corresponding Ni and Pd complexes have also been prepared and investigated to assist interpretation of optical properties within the triad. Computational studies based on DFT and time-dependent DFT highlight the electronic properties of [Pt(iPr2 pipdt)(Quinoxdt)]. The preferential site of interaction between the Pt complex and incoming AgI is evidenced by the shape of the Fukui functions, pointing to the thiolic sulfur and platinum atoms as the most reactive sites towards a soft cation. Calculated optical properties are in agreement with experimental findings. This study sheds light on the structure-property relationship for this class of compounds.
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Affiliation(s)
- Salahuddin S Attar
- Department of Chemical and Soil Sciences, University of Cagliari, INSTM Research Unit, 09042, Monserrato (CA), Italy
| | - Flavia Artizzu
- L3-Luminescent Lanthanide Lab, Department of Chemistry, Ghent University, Krijgslaan 281-building S3, 9000, Gent, Belgium
| | - Luciano Marchiò
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 11/a, 43124, Parma, Italy
| | - Davide Espa
- Department of Chemical and Soil Sciences, University of Cagliari, INSTM Research Unit, 09042, Monserrato (CA), Italy
| | - Luca Pilia
- Dipartimento di Ingegneria Meccanica, Chimica e dei Materiali, Università di Cagliari, Via Marengo 2, 09123, Cagliari, Italy
| | - Maria F Casula
- Department of Chemical and Soil Sciences, University of Cagliari, INSTM Research Unit, 09042, Monserrato (CA), Italy
| | - Angela Serpe
- Dipartimento di Ingegneria Civile, Ambientale e Architettura, Università di Cagliari, Via Marengo 2, 09123, Cagliari, Italy
| | - Maddalena Pizzotti
- Department of Chemistry, INSTM Research Unit, University of Milan, Via C. Golgi 19, 20133, Milano, Italy
| | - Alessio Orbelli-Biroli
- Istituto di Scienze e Tecnologie Molecolari del CNR (CNR-ISTM), SmartMatLab Centre, CNR, Via C. Golgi 19, 20133, Milano, Italy
| | - Paola Deplano
- Department of Chemical and Soil Sciences, University of Cagliari, INSTM Research Unit, 09042, Monserrato (CA), Italy
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13
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Espa D, Pilia L, Attar S, Serpe A, Deplano P. Molecular engineering of heteroleptic metal-dithiolene complexes with optimized second-order NLO response. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.05.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Marchio' L, Serpe A, Deplano P, Cuscusa M. Ion pair interactions in noble metal complexes with halogen atoms. Acta Crystallogr A Found Adv 2017. [DOI: 10.1107/s2053273317082833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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15
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Attar S, Espa D, Artizzu F, Pilia L, Serpe A, Pizzotti M, Di Carlo G, Marchiò L, Deplano P. Optically Multiresponsive Heteroleptic Platinum Dithiolene Complex with Proton-Switchable Properties. Inorg Chem 2017; 56:6763-6767. [DOI: 10.1021/acs.inorgchem.7b00238] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Salahuddin Attar
- Dipartimento di
Scienze Chimiche e Geologiche and Unità di Ricerca INSTM, Università di Cagliari, S.S. 554-Bivio per Sestu, I09042 Monserrato-Cagliari, Italy
| | - Davide Espa
- Dipartimento di
Scienze Chimiche e Geologiche and Unità di Ricerca INSTM, Università di Cagliari, S.S. 554-Bivio per Sestu, I09042 Monserrato-Cagliari, Italy
| | - Flavia Artizzu
- Dipartimento di
Scienze Chimiche e Geologiche and Unità di Ricerca INSTM, Università di Cagliari, S.S. 554-Bivio per Sestu, I09042 Monserrato-Cagliari, Italy
| | - Luca Pilia
- Dipartimento di Ingegneria Meccanica, Chimica e dei Materiali, Università di Cagliari, Via Marengo 2, I09123 Cagliari, Italy
| | - Angela Serpe
- Dipartimento di
Scienze Chimiche e Geologiche and Unità di Ricerca INSTM, Università di Cagliari, S.S. 554-Bivio per Sestu, I09042 Monserrato-Cagliari, Italy
| | - Maddalena Pizzotti
- Dipartimento di Chimica
and Unità di Ricerca INSTM, Università di Milano, via Golgi
19, I20133 Milano, Italy
| | - Gabriele Di Carlo
- Dipartimento di Chimica
and Unità di Ricerca INSTM, Università di Milano, via Golgi
19, I20133 Milano, Italy
| | - Luciano Marchiò
- Dipartimento di Chimica, Università di Parma, Parco Area delle Scienze 17A, I43124 Parma, Italy
| | - Paola Deplano
- Dipartimento di
Fisica and Unità di Ricerca INSTM, Università di Cagliari, S.S. 554-Bivio per Sestu, I09042 Monserrato-Cagliari, Italy
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16
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Attar S, Espa D, Artizzu F, Mercuri ML, Serpe A, Sessini E, Concas G, Congiu F, Marchiò L, Deplano P. A Platinum-Dithiolene Monoanionic Salt Exhibiting Multiproperties, Including Room-Temperature Proton-Dependent Solution Luminescence. Inorg Chem 2016; 55:5118-26. [PMID: 27163727 DOI: 10.1021/acs.inorgchem.5b02491] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The platinum salt C[PtL2], where C = [(R)-Ph(Me)HC*-NMe3](+) and [PtL2](-) = radical monoanion based on [4', 5': 5, 6][1, 4]dithiino[2,3-b]quinoxaline-1',3'dithiolato, shows a variety of properties both in solution and in the solid state thanks to the electronic and/or structural features of the ligand. The complex crystallizes in the chiral space group P1 due to the presence of the enantiopure cation (R)-Ph(Me)HC*-NMe3(+), and it shows paramagnetic behavior relatable to the [PtL2](-) radical monoanion. This anionic complex is redox active and shows a strong near-infrared absorbance peak at 1085 nm tunable with the oxidation state of the complex. This complex exhibits a proton-dependent emission at 572 nm in solution at room temperature. The excitation band corresponds to the HOMO-1 (π-orbitals of the S2C2S2 system) → LUMO (π-orbitals of the quinoxaline and benzene-like moieties) transition suggesting that emission is mainly ligand centered in character. The luminescent properties are highly unusual, since the emission falls well above the energy of the lowest energy absorption (anti-Kasha behavior). Joint experimental and density functional theory (DFT) and time-dependent DFT studies are discussed to provide a satisfactory structure/property relationship.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Luciano Marchiò
- Dipartimento di Chimica, Università di Parma , Parco Area delle Scienze 17A, I43124 Parma, Italy
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17
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Espa D, Pilia L, Marchiò L, Artizzu F, Di Carlo G, Marinotto D, Serpe A, Tessore F, Deplano P. A nonlinear optical active polymer film based on Pd(ii) dithione/dithiolate second-order NLO chromophores. Dalton Trans 2016; 45:17431-17438. [DOI: 10.1039/c6dt02911f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A film of [Pd(Dod2pipdt)(dmit)] incorporated into a polymethylmethacrylate matrix, showing a good second-harmonic generation, has been prepared for the first time in the class of dithione–dithiolate 2ndorder NLO-chromophores.
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Affiliation(s)
- D. Espa
- Dipartimento di Scienze Chimiche e Geologiche
- Università di Cagliari
- Unità di Ricerca dell'INSTM
- I09042 Monserrato-Cagliari
- Italy
| | - L. Pilia
- Dipartimento di Scienze Chimiche e Geologiche
- Università di Cagliari
- Unità di Ricerca dell'INSTM
- I09042 Monserrato-Cagliari
- Italy
| | - L. Marchiò
- Dipartimento di Chimica
- Università di Parma
- I43100 Parma
- Italy
| | - F. Artizzu
- Dipartimento di Scienze Chimiche e Geologiche
- Università di Cagliari
- Unità di Ricerca dell'INSTM
- I09042 Monserrato-Cagliari
- Italy
| | - G. Di Carlo
- Dipartimento di Chimica
- Università di Milano
- Unità di Ricerca dell'INSTM
- 20133 Milano
- Italy
| | - D. Marinotto
- Dipartimento di Chimica
- Università di Milano
- Unità di Ricerca dell'INSTM
- 20133 Milano
- Italy
| | - A. Serpe
- Dipartimento di Scienze Chimiche e Geologiche
- Università di Cagliari
- Unità di Ricerca dell'INSTM
- I09042 Monserrato-Cagliari
- Italy
| | - F. Tessore
- Dipartimento di Chimica
- Università di Milano
- Unità di Ricerca dell'INSTM
- 20133 Milano
- Italy
| | - P. Deplano
- Dipartimento di Scienze Chimiche e Geologiche
- Università di Cagliari
- Unità di Ricerca dell'INSTM
- I09042 Monserrato-Cagliari
- Italy
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18
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Atzori M, Artizzu F, Marchiò L, Loche D, Caneschi A, Serpe A, Deplano P, Avarvari N, Mercuri ML. Switching-on luminescence in anilate-based molecular materials. Dalton Trans 2015. [PMID: 26200204 DOI: 10.1039/c5dt02241j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple change of one chloro substituent on the chloranilate ligand with a cyano group dramatically affects the electronic properties of the anilate moiety inducing unprecedented luminescence properties in the class of anilate-based ligands and their metal complexes. Here we report on the optimized synthesis and full characterization, including photoluminescence, of the chlorocyananilate ligand (ClCNAn(2-)) (dianion of the 3-chloro-6-cyano-2,5-dihydroxybenzoquinone, H2ClCNC6O4), a unique example of a heterosubstituted anilate ligand whose electronic properties, optical properties and coordination chemistry have never been investigated to date, even though it has been known since 1966. The synthesis and full characterization of its tris-chelated metal complexes with Cr(iii), Fe(iii), and Al(iii) metal ions are also described herein. These complexes, formulated as [A]3[M(III)(ClCNAn)3] (A = (n-Bu)4N(+) or Ph4P(+); M(III) = Cr (), Fe (), Al ()), are isostructural. While and are potential molecular building blocks for the preparation of molecule-based magnets or paramagnetic conducting organic-inorganic hybrid systems, , instead, where the coordinated Al(iii) metal ions retain the luminescence of the ligand, represents a unique building block to achieve heterobimetallic assemblies showing emissive properties under visible light irradiation.
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Affiliation(s)
- Matteo Atzori
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 - Bivio per Sestu - I09042, Monserrato (Cagliari), Italy.
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19
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Crespo Alonso M, Rigoldi A, Ibba A, Zicca L, Deplano P, Mercuri M, Cocco P, Serpe A. A simple, sensitive analytical method for platinum trace determination in human urine. Microchem J 2015. [DOI: 10.1016/j.microc.2015.03.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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20
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Frei F, Rondi A, Espa D, Mercuri ML, Pilia L, Serpe A, Odeh A, Van Mourik F, Chergui M, Feurer T, Deplano P, Vlček A, Cannizzo A. Ultrafast electronic and vibrational relaxations in mixed-ligand dithione-dithiolato Ni, Pd, and Pt complexes. Dalton Trans 2015; 43:17666-76. [PMID: 25154705 DOI: 10.1039/c4dt01955e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Ultrafast excited-state dynamics of planar Pt, Pd, and Ni dithione-dithiolato complexes were investigated by transient absorption spectroscopy on the femtosecond-picosecond timescale. All studied complexes show a common photobehaviour, although individual kinetics parameters and quantum yields vary with the metal, the dithione ligand and, namely the solvent (DMF, MeCN). Laser pulse irradiation at 800 nm populates the lowest singlet excited state of a dithiolato → dithione charge transfer character, (1)LL'CT. The optically excited state undergoes a solvation-driven sub-picosecond electronic relaxation that enhances the dithione/dithiolato charge separation. The (1)LL'CT state decays with a 1.9-4.5 ps lifetime by two simultaneous pathways: intersystem crossing (ISC) to the lowest triplet state (3)LL'CT and non-radiative decay to the ground state. ISC occurs on a ∼6 ps timescale, virtually independent of the metal, whereas the rate of the non-radiative decay to the ground state decreases on going from Ni (2 ps) to Pd (3 ps) and Pt (∼10 ps). (3)LL'CT is initially formed as a vibrationally excited state. Its equilibration (cooling) takes place on a picosecond timescale and is accompanied by a competitive decay to the ground state. Equilibrated (3)LL'CT is populated with a quantum yield of less than 50%, depending on the metal: Pt > Pd > Ni. (3)LL'CT is long-lived for Pt and Pd (≫500 ps) and short-lived for Ni (∼15 ps). Some of the investigated complexes also exhibit spectral changes due to vibrational cooling of the singlet (2-3 ps, depending on the solvent). Rotational diffusion occurs with lifetimes in the 120-200 ps range. Changing the dithione (Bz2pipdt/(i)Pr2pipdt) as well as dithiolate/diselenolate (dmit/dsit) ligands has only small effects on the photobehavior. It is proposed that the investigated dithione-dithiolato complexes could act as photooxidants (*E(o) ≈ +1.2 V vs. NHE) utilizing their lowest excited singlet ((1)LL'CT), provided that the excited-state electron transfer is ultrafast, competitive with the picosecond decay. On the other hand, the efficiency of any triplet-based processes would be severely limited by the low quantum yield of the triplet population.
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Affiliation(s)
- Franziska Frei
- Institute of Applied Physics, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland
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Artizzu F, Quochi F, Marchiò L, Correia RF, Saba M, Serpe A, Mura A, Mercuri ML, Bongiovanni G, Deplano P. Cover Picture: Ln 3Q 9as a Molecular Framework for Ion-Size-Driven Assembly of Heterolanthanide (Nd, Er, Yb) Multiple Near-Infrared Emitters (Chem. Eur. J. 10/2015). Chemistry 2015. [DOI: 10.1002/chem.404435] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Artizzu F, Quochi F, Marchiò L, Correia RF, Saba M, Serpe A, Mura A, Mercuri ML, Bongiovanni G, Deplano P. Ln 3Q 9as a Molecular Framework for Ion-Size-Driven Assembly of Heterolanthanide (Nd, Er, Yb) Multiple Near-Infrared Emitters. Chemistry 2015. [DOI: 10.1002/chem.201406660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Abstract
Three classes of heterolanthanide assemblies, multi-dimensional frameworks (A), discrete polynuclear molecules (B) and preformed coordinated units connected by a linker (C), are discussed. Potential functionalities arising from the distance-dependent coexistence or interplay of the physical properties are pointed out.
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Affiliation(s)
- Flavia Artizzu
- Dipartimento di Scienze Chimiche e Geologiche
- University of Cagliari
- Monserrato-Cagliari
- Italy
- Dipartimento di Fisica
| | - Francesco Quochi
- Dipartimento di Fisica
- University of Cagliari
- Monserrato-Cagliari
- Italy
| | - Angela Serpe
- Dipartimento di Scienze Chimiche e Geologiche
- University of Cagliari
- Monserrato-Cagliari
- Italy
| | - Elisa Sessini
- Dipartimento di Scienze Chimiche e Geologiche
- University of Cagliari
- Monserrato-Cagliari
- Italy
| | - Paola Deplano
- Dipartimento di Scienze Chimiche e Geologiche
- University of Cagliari
- Monserrato-Cagliari
- Italy
- Dipartimento di Fisica
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Pilia L, Espa D, Concas G, Congiu F, Marchiò L, Laura Mercuri M, Serpe A, Deplano P. Tuning the oxidation state and magnetic and coordination behaviour of iron and cobalt complexes by O/S variation in mono-thio and dithio-oxamide chelating ligands. NEW J CHEM 2015. [DOI: 10.1039/c5nj00425j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A variety of iron and cobalt complexes which differ in coordination, metal oxidation state, and spin state is obtained with corresponding S,O and S,S′ title ligands.
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Affiliation(s)
- Luca Pilia
- Dipartimento di Ingegneria Meccanica Chimica e dei Materiali
- Università di Cagliari
- Cagliari
- Italy
| | - Davide Espa
- Dipartimento di Scienze Chimiche e Geologiche
- Università di Cagliari
- I09042 Monserrato-Cagliari
- Italy
| | - Giorgio Concas
- Dipartimento di Fisica
- Università di Cagliari
- I09042 Monserrato
- Italy
| | - Francesco Congiu
- Dipartimento di Fisica
- Università di Cagliari
- I09042 Monserrato
- Italy
| | | | - M. Laura Mercuri
- Dipartimento di Scienze Chimiche e Geologiche
- Università di Cagliari
- I09042 Monserrato-Cagliari
- Italy
| | - Angela Serpe
- Dipartimento di Scienze Chimiche e Geologiche
- Università di Cagliari
- I09042 Monserrato-Cagliari
- Italy
| | - Paola Deplano
- Dipartimento di Scienze Chimiche e Geologiche
- Università di Cagliari
- I09042 Monserrato-Cagliari
- Italy
- Dipartimento di Fisica
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25
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Atzori M, Serpe A, Deplano P, Schlueter JA, Laura Mercuri M. Tailoring magnetic properties of molecular materials through non-covalent interactions. Inorg Chem Front 2015. [DOI: 10.1039/c4qi00179f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This Chemistry Frontier highlights how supramolecular non-covalent interactions can be employed as effective tools in tailoring the magnetic properties of crystalline functional molecular materials.
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Affiliation(s)
- Matteo Atzori
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- I09042 Monserrato (Cagliari)
- Italy
| | - Angela Serpe
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- I09042 Monserrato (Cagliari)
- Italy
| | - Paola Deplano
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- I09042 Monserrato (Cagliari)
- Italy
| | - John A. Schlueter
- Materials Science Division
- Argonne National Laboratory
- Lemont
- USA
- Division of Materials Research
| | - Maria Laura Mercuri
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- I09042 Monserrato (Cagliari)
- Italy
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26
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Espa D, Pilia L, Marchiò L, Attar SS, Barsella A, Fort A, Mercuri ML, Serpe A, Deplano P. Structural changes in MII dithione/dithiolato complexes (M = Ni, Pd, Pt) on varying the dithione functionalization. CrystEngComm 2015. [DOI: 10.1039/c5ce00469a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Large differences in the crystal structures of the title triads, induced by interactions exchanged by the peripheral fragments of the ligands, have been found and described through the Hirshfeld surface analysis.
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Affiliation(s)
- Davide Espa
- Dipartimento di Scienze Chimiche e Geologiche
- Università di Cagliari
- Unità di Ricerca dell'INSTM
- I09042 Monserrato-Cagliari, Italy
| | - Luca Pilia
- Dipartimento di Scienze Chimiche e Geologiche
- Università di Cagliari
- Unità di Ricerca dell'INSTM
- I09042 Monserrato-Cagliari, Italy
- Dipartimento di Ingegneria Meccanica Chimica e dei Materiali
| | - Luciano Marchiò
- Dipartimento di Chimica
- Università di Parma
- I43100 Parma, Italy
| | - Salahuddin S. Attar
- Dipartimento di Scienze Chimiche e Geologiche
- Università di Cagliari
- Unità di Ricerca dell'INSTM
- I09042 Monserrato-Cagliari, Italy
| | - Alberto Barsella
- Departement d'Optique ultra-rapide et Nanophotonique
- IPCMS-CNRS
- 67034 Strasbourg Cedex 2, France
| | - Alain Fort
- Departement d'Optique ultra-rapide et Nanophotonique
- IPCMS-CNRS
- 67034 Strasbourg Cedex 2, France
| | - Maria Laura Mercuri
- Dipartimento di Scienze Chimiche e Geologiche
- Università di Cagliari
- Unità di Ricerca dell'INSTM
- I09042 Monserrato-Cagliari, Italy
| | - Angela Serpe
- Dipartimento di Scienze Chimiche e Geologiche
- Università di Cagliari
- Unità di Ricerca dell'INSTM
- I09042 Monserrato-Cagliari, Italy
| | - Paola Deplano
- Dipartimento di Scienze Chimiche e Geologiche
- Università di Cagliari
- Unità di Ricerca dell'INSTM
- I09042 Monserrato-Cagliari, Italy
- Dipartimento di Fisica
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Artizzu F, Quochi F, Marchiò L, Correia RF, Saba M, Serpe A, Mura A, Mercuri ML, Bongiovanni G, Deplano P. Ln3Q9as a Molecular Framework for Ion-Size-Driven Assembly of Heterolanthanide (Nd, Er, Yb) Multiple Near-Infrared Emitters. Chemistry 2014; 21:3882-5. [DOI: 10.1002/chem.201405634] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Indexed: 11/11/2022]
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Atzori M, Pop F, Auban-Senzier P, Gómez-García CJ, Canadell E, Artizzu F, Serpe A, Deplano P, Avarvari N, Mercuri ML. Structural Diversity and Physical Properties of Paramagnetic Molecular Conductors Based on Bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) and the Tris(chloranilato)ferrate(III) Complex. Inorg Chem 2014; 53:7028-39. [DOI: 10.1021/ic501001r] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matteo Atzori
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 − Bivio per Sestu − I09042 Monserrato, Cagliari, Italy
- Laboratoire MOLTECH-Anjou
UMR 6200, UFR Sciences, CNRS, Université d’Angers, Bât.
K, 2 Bd. Lavoisier, 49045 Angers, France
| | - Flavia Pop
- Laboratoire MOLTECH-Anjou
UMR 6200, UFR Sciences, CNRS, Université d’Angers, Bât.
K, 2 Bd. Lavoisier, 49045 Angers, France
| | - Pascale Auban-Senzier
- Laboratoire de Physique
des Solides, UMR 8502, Université Paris-Sud, Bât.
510, 91405 Orsay, France
| | - Carlos J. Gómez-García
- Instituto de Ciencia Molecular (ICMol),
Parque Científico, Universidad de Valencia, C/Catedrático
José Beltrán, 2, 46980 Paterna, Spain
| | - Enric Canadell
- Institut de Ciència de Materials de Barcelona (CSIC), Campus de la UAB, E-08193 Bellaterra, Spain
| | - Flavia Artizzu
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 − Bivio per Sestu − I09042 Monserrato, Cagliari, Italy
| | - Angela Serpe
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 − Bivio per Sestu − I09042 Monserrato, Cagliari, Italy
| | - Paola Deplano
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 − Bivio per Sestu − I09042 Monserrato, Cagliari, Italy
| | - Narcis Avarvari
- Laboratoire MOLTECH-Anjou
UMR 6200, UFR Sciences, CNRS, Université d’Angers, Bât.
K, 2 Bd. Lavoisier, 49045 Angers, France
| | - Maria Laura Mercuri
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 − Bivio per Sestu − I09042 Monserrato, Cagliari, Italy
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Atzori M, Artizzu F, Sessini E, Marchiò L, Loche D, Serpe A, Deplano P, Concas G, Pop F, Avarvari N, Mercuri ML. Halogen-bonding in a new family of tris(haloanilato)metallate(III) magnetic molecular building blocks. Dalton Trans 2014; 43:7006-19. [PMID: 24626345 DOI: 10.1039/c4dt00127c] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here we report on new tris(haloanilato)metallate(III) complexes with general formula [A]3[M(X2An)3] (A = (n-Bu)4N(+), (Ph)4P(+); M = Cr(III), Fe(III); X2An = 3,6-dihalo derivatives of 2,5-dihydroxybenzoquinone (H4C6O4), chloranilate (Cl2An(2-)), bromanilate (Br2An(2-)) and iodanilate (I2An(2-))), obtained by a general synthetic strategy, and their full characterization. The crystal structures of these Fe(III) and Cr(III) haloanilate complexes consist of anions formed by homoleptic complexes formulated as [M(X2An)3](3-) and (Et)3NH(+), (n-Bu)4N(+), or (Ph4)P(+) cations. All complexes exhibit octahedral coordination geometry with metal ions surrounded by six oxygen atoms from three chelate ligands. These complexes are chiral according to the metal coordination of three bidentate ligands, and both Λ and Δ enantiomers are present in their crystal lattice. The packing of [(n-Bu)4N]3[Cr(I2An)3] (5a) shows that the complexes form supramolecular dimers that are held together by two symmetry related I···O interactions (3.092(8) Å), considerably shorter than the sum of iodine and oxygen van der Waals radii (3.50 Å). The I···O interaction can be regarded as a halogen bond (XB), where the iodine behaves as the XB donor and the oxygen atom as the XB acceptor. This is in agreement with the properties of the electrostatic potential for [Cr(I2An)3](3-) that predicts a negative charge accumulation on the peripheral oxygen atoms and a positive charge accumulation on the iodine. The magnetic behaviour of all complexes, except 5a, may be explained by considering a set of paramagnetic non-interacting Fe(III) or Cr(III) ions, taking into account the zero-field splitting effect. The presence of strong XB interactions in 5a are able, instead, to promote antiferromagnetic interactions among paramagnetic centers at low temperature, as shown by the fit with the Curie-Weiss law, in agreement with the formation of halogen-bonded supramolecular dimers.
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Affiliation(s)
- Matteo Atzori
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 - Bivio per Sestu, I09042 Monserrato (Cagliari), Italy.
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Espa D, Pilia L, Makedonas C, Marchiò L, Mercuri ML, Serpe A, Barsella A, Fort A, Mitsopoulou CA, Deplano P. Role of the acceptor in tuning the properties of metal [M(II) = Ni, Pd, Pt] dithiolato/dithione (donor/acceptor) second-order nonlinear chromophores: combined experimental and theoretical studies. Inorg Chem 2014; 53:1170-83. [PMID: 24405208 DOI: 10.1021/ic402738b] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The mixed-ligand complexes [M(II)(Et2dazdt)(mnt)] (M = Ni, 1; Pd, 2; Pt, 3) [Et2dazdt = N,N'-diethyl-perhydrodiazepine-2,3-dithione; mnt = maleonitrile-2,3-dithiolate] have been prepared and fully characterized. X-ray diffractometric studies on 1-3 (the structure of 1 was already known) show that the crystals are isostructural (triclinic, P-1), and two independent molecular entities are present in the unit cell. These entities differ in the orientation of the ethyl substituents with respect to the epta-atomic ring. In the C2S2MS2C2 dithiolene core the four sulfur atoms define a square-planar coordination environment of the metal where the M-S bond distances involving the two ligands are similar, while the C-S bond distances in the C2S2 units exhibit a significant difference in Et2dazdt (dithione) and mnt (dithiolato) ligands. 1-3 show in the visible region one or two moderately strong absorption peaks, having ligand-to-ligand charge-transfer (CT) character with some contribution of the metal, and show negative solvatochromism and molecular quadratic optical nonlinearity, which was determined by the EFISH (electric-field-induced second-harmonic generation) technique. These complexes are redox active and show two reversible reduction waves and one irreversible oxidation wave. Theoretical calculations based on DFT and TD-DFT calculations on complexes 1-3 as well as on [Pt(Bz2pipdt)(mnt)] (4) and [Pt(Bz2pipdt)(dmit)] (5) highlight the factors which affect the optical properties of these second-order redox-active NLO chromophores. Actually, the torsion angle of the dithione system (δ2) inversely correlates either with the oscillator strengths of the main transition of the complexes or with their beta values. The high beta value of 5 can be attributed both to its lowest torsion angles and to the extent of the π system of its dithiolate ligand, dmit.
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Affiliation(s)
- Davide Espa
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari , S.S. 554-Bivio per Sestu, I09042 Monserrato-Cagliari, Italy
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Mercuri ML, Serpe A, Marchiò L, Artizzu F, Espa D, Deplano P. Effective one-step removal-inertization of hazardous metals (Cd and Hg) by environmental friendly reagents. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2013.10.045] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Espa D, Pilia L, Marchiò L, Mercuri ML, Serpe A, Sessini E, Deplano P. Near-infrared pigments based on ion-pair charge transfer salts of dicationic and dianionic metal-dithiolene [M(II) = Pd, Pt] complexes. Dalton Trans 2013; 42:12429-39. [PMID: 23863989 DOI: 10.1039/c3dt51407b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Mixing [M(Et2dazdt)2](BF4)2 [M = Ni(II), Pd(II), Pt(II); Et2dazdt = N,N'-diethyl-perhydrodiazepine-2,3-dithione] with (Bu4N)2[M(mnt)2] (mnt = maleonitrile-2,3-dithiolate) in CH3CN produces the known mixed ligand dithiolene complex [Ni(Et2dazdt)(mnt)] in the nickel case and ion-pair salts [M(Et2dazdt)2][M(mnt)2] in the palladium (1) and platinum (2) cases. Structural characterization of 2 shows that the anionic (donor) and cationic (acceptor) complexes form an irregular stack that lies in the bc crystallographic plane. The shortest contacts exchanged by the anion and cation molecules within each stack are those occurring through the hydrogen atoms of the CH2 groups of Et2dazdt and the Pt(2)-S(22) segment (d(H(81a)-S(22) = 2.981(3) Å) and the nitrogen atom of the cyano group of mnt and the carbon atom of one of the thione moieties (d(N(12)-C(11) = 3.179(3) Å). The Pt atom of [Pt(mnt)2](2-) is surrounded by two hydrogen atoms of the Et2dazdt ligand, whereas the Pt atom of [Pt(Et2dazdt)2](2+) is surrounded by two carbon atoms of the dithiolate moiety of mnt. Intramolecular interactions are due to contacts exchanged mainly through H-atoms, which are suitable to mediate charge-transfer (CT) interactions. In fact, these salts are characterized by a long wavelength CT peak [λmax = 905 nm (1), 937 nm (2)], which makes them candidates as near-infrared pigments, whose properties are tunable with the redox features of the components, the energy of the NIR absorption being relatable to the driving force of electron transfer from the donor (dianion) to the acceptor (dication). A thorough description of interactions occurring between the complex anions and complex cations has been achieved by investigating the Hirshfeld surface (HS) properties. Computational methods are in agreement with experimental findings and allow us to highlight the electronic features of the components of these CT salts, providing a structure-property relationship, useful in designing new candidates to optimize the desired properties.
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Affiliation(s)
- Davide Espa
- Dipartimento di Scienze Chimiche e Geologiche, Research Unit of INSTM, Università di Cagliari, S.S. 554-Bivio per Sestu, I09042 Monserrato-Cagliari, Italy
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Atzori M, Benmansour S, Mínguez Espallargas G, Clemente-León M, Abhervé A, Gómez-Claramunt P, Coronado E, Artizzu F, Sessini E, Deplano P, Serpe A, Mercuri ML, Gómez García CJ. A family of layered chiral porous magnets exhibiting tunable ordering temperatures. Inorg Chem 2013; 52:10031-40. [PMID: 23968133 DOI: 10.1021/ic4013284] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A simple change of the substituents in the bridging ligand allows tuning of the ordering temperatures, Tc, in the new family of layered chiral magnets A[M(II)M(III)(X2An)3]·G (A = [(H3O)(phz)3](+) (phz = phenazine) or NBu4(+); X2An(2-) = C6O4X2(2-) = 2,5-dihydroxy-1,4-benzoquinone derivative dianion, with M(III) = Cr, Fe; M(II) = Mn, Fe, Co, etc.; X = Cl, Br, I, H; G = water or acetone). Depending on the nature of X, an increase in Tc from ca. 5.5 to 6.3, 8.2, and 11.0 K (for X = Cl, Br, I, and H, respectively) is observed in the MnCr derivative. Furthermore, the presence of the chiral cation [(H3O)(phz)3](+), formed by the association of a hydronium ion with three phenazine molecules, leads to a chiral structure where the Δ-[(H3O)(phz)3](+) cations are always located below the Δ-[Cr(Cl2An)3](3-) centers, leading to a very unusual localization of both kinds of metals (Cr and Mn) and to an eclipsed disposition of the layers. This eclipsed disposition generates hexagonal channels with a void volume of ca. 20% where guest molecules (acetone and water) can be reversibly absorbed. Here we present the structural and magnetic characterization of this new family of anilato-based molecular magnets.
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Affiliation(s)
- Matteo Atzori
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554, Bivio per Sestu, I09042 Monserrato, Cagliari, Italy
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Serpe A, Marchiò L, Artizzu F, Mercuri ML, Deplano P. Effective one-step gold dissolution using environmentally friendly low-cost reagents. Chemistry 2013; 19:10111-4. [PMID: 23788281 DOI: 10.1002/chem.201300940] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Indexed: 11/11/2022]
Abstract
Digging for gold: Mixtures of tetraethylthiuram disulfide (Et4TDS) and I2 in acetone are capable of dissolving elemental gold and forming valuable metal complexes, in which the stoichiometry depends on the mixture composition. These mixtures can also etch the gold layer homogeneously and selectively from Si/SiO2/Ti/Au thin-layered structures under mild conditions (see figure).
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Affiliation(s)
- Angela Serpe
- Dipartimento di Scienze Chimiche e Geologiche and Spin Off 3R Metals Ltd, Research Unit of INSTM, Università di Cagliari, SS554, Bivio per Sestu, 09042 Monserrato, Italy.
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Pilia L, Sessini E, Artizzu F, Yamashita M, Serpe A, Kubo K, Ito H, Tanaka H, Kuroda SI, Yamada JI, Deplano P, Gómez-García CJ, Mercuri ML. New BDH-TTP/[MIII(C5O5)3]3– (M = Fe, Ga) Isostructural Molecular Metals. Inorg Chem 2012; 52:423-30. [DOI: 10.1021/ic302234j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Luca Pilia
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 − Bivio per Sestu, I09042 Monserrato (Cagliari),
Italy
- EaStChem
and School of Chemistry, University of Edinburgh, King’s Buildings, West Mains Road, Edinburgh EH9 3JJ, United
Kingdom
| | - Elisa Sessini
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 − Bivio per Sestu, I09042 Monserrato (Cagliari),
Italy
| | - Flavia Artizzu
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 − Bivio per Sestu, I09042 Monserrato (Cagliari),
Italy
| | | | - Angela Serpe
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 − Bivio per Sestu, I09042 Monserrato (Cagliari),
Italy
| | - Kazuya Kubo
- Department
of Chemistry, Tohoku University, Sendai 980-8578, Japan
| | - Hiroshi Ito
- Department of Applied Physics, Nagoya University, Nagoya 464-8603, Japan
| | - Hisaaki Tanaka
- Department of Applied Physics, Nagoya University, Nagoya 464-8603, Japan
| | - Shin-ichi Kuroda
- Department of Applied Physics, Nagoya University, Nagoya 464-8603, Japan
| | - Jun-ichi Yamada
- Department of Material
Science, University of Hyogo, 3-2-1 Kouto, Kamigori-cho, Ako-gun, Hyogo 678-1297, Japan
| | - Paola Deplano
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 − Bivio per Sestu, I09042 Monserrato (Cagliari),
Italy
| | - Carlos J. Gómez-García
- Instituto de Ciencia
Molecular (ICMol), Parque Científico, Universidad de Valencia, C/Catedrático José
Beltrán, 2, 46980 Paterna (Valencia), Spain
| | - Maria Laura Mercuri
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 − Bivio per Sestu, I09042 Monserrato (Cagliari),
Italy
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Atzori M, Sessini E, Artizzu F, Pilia L, Serpe A, Gómez-García CJ, Giménez-Saiz C, Deplano P, Mercuri ML. Synthesis and Physical Properties of K4[Fe(C5O5)2(H2O)2](HC5O5)2·4H2O (C5O52– = Croconate): A Rare Example of Ferromagnetic Coupling via H-bonds. Inorg Chem 2012; 51:5360-7. [DOI: 10.1021/ic300331e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matteo Atzori
- Dipartimento di Scienze Chimiche
e Geologiche, Università degli Studi di Cagliari, S.S. 554−Bivio per Sestu−I09042 Monserrato (Cagliari),
Italy
| | - Elisa Sessini
- Dipartimento di Scienze Chimiche
e Geologiche, Università degli Studi di Cagliari, S.S. 554−Bivio per Sestu−I09042 Monserrato (Cagliari),
Italy
| | - Flavia Artizzu
- Dipartimento di Scienze Chimiche
e Geologiche, Università degli Studi di Cagliari, S.S. 554−Bivio per Sestu−I09042 Monserrato (Cagliari),
Italy
| | - Luca Pilia
- Dipartimento di Scienze Chimiche
e Geologiche, Università degli Studi di Cagliari, S.S. 554−Bivio per Sestu−I09042 Monserrato (Cagliari),
Italy
| | - Angela Serpe
- Dipartimento di Scienze Chimiche
e Geologiche, Università degli Studi di Cagliari, S.S. 554−Bivio per Sestu−I09042 Monserrato (Cagliari),
Italy
| | - Carlos J. Gómez-García
- Instituto de Ciencia
Molecular
(ICMol) Parque Científico, Universidad de Valencia, 46980 Paterna (Valencia), Spain
| | - Carlos Giménez-Saiz
- Instituto de Ciencia
Molecular
(ICMol) Parque Científico, Universidad de Valencia, 46980 Paterna (Valencia), Spain
| | - Paola Deplano
- Dipartimento di Scienze Chimiche
e Geologiche, Università degli Studi di Cagliari, S.S. 554−Bivio per Sestu−I09042 Monserrato (Cagliari),
Italy
| | - Maria Laura Mercuri
- Dipartimento di Scienze Chimiche
e Geologiche, Università degli Studi di Cagliari, S.S. 554−Bivio per Sestu−I09042 Monserrato (Cagliari),
Italy
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Artizzu F, Quochi F, Saba M, Marchiò L, Espa D, Serpe A, Mura A, Mercuri ML, Bongiovanni G, Deplano P. Dual Emitting [Yb(5,7ClQ)2(H5,7ClQ)2Cl]: Chemical and Photophysical Properties. Chempluschem 2012. [DOI: 10.1002/cplu.201200006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Espa D, Pilia L, Marchiò L, Pizzotti M, Robertson N, Tessore F, Mercuri ML, Serpe A, Deplano P. Electrochromic second-order NLO chromophores based on MII (M = Ni, Pd, Pt) complexes with diselenolato–dithione (donor–acceptor) ligands. Dalton Trans 2012; 41:12106-13. [DOI: 10.1039/c2dt31537h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Espa D, Pilia L, Marchiò L, Artizzu F, Serpe A, Mercuri ML, Simão D, Almeida M, Pizzotti M, Tessore F, Deplano P. Mixed-ligand Pt(ii) dithione-dithiolato complexes: influence of the dicyanobenzodithiolato ligand on the second-order NLO properties. Dalton Trans 2012; 41:3485-93. [DOI: 10.1039/c2dt11956k] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Artizzu F, Quochi F, Saba M, Loche D, Mercuri ML, Serpe A, Mura A, Bongiovanni G, Deplano P. Silica sol–gel glasses incorporating dual-luminescent Yb quinolinolato complex: processing, emission and photosensitising properties of the ‘antenna’ ligand. Dalton Trans 2012; 41:13147-53. [PMID: 23007128 DOI: 10.1039/c2dt30323j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Flavia Artizzu
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, Monserrato-Cagliari, Italy.
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Pilia L, Espa D, Barsella A, Fort A, Makedonas C, Marchiò L, Mercuri ML, Serpe A, Mitsopoulou CA, Deplano P. Combined experimental and theoretical study on redox-active d8 metal dithione-dithiolato complexes showing molecular second-order nonlinear optical activity. Inorg Chem 2011; 50:10015-27. [PMID: 21939192 DOI: 10.1021/ic2007765] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Synthesis, characterization, NLO properties, and theoretical studies of the mixed-ligand dithiolene complexes of the nickel triad [M(II)(Bz(2)pipdt)(mnt)] (Bz(2)pipdt = 1,4-dibenzyl-piperazine-3,2-dithione, mnt = maleonitriledithiolato, M(II) = Ni, 1, Pd, 2, Pt, 3) are reported. Molecular structural characterization of 1-3 points out that four sulfur atoms are in a slightly distorted square-planar geometry. While the M-S bond distances are only slightly different, comparison of the C-C and C-S bonds in the C(2)S(2)MS(2)C(2) core allows us to point out a significant difference between the C-C and the C-S distances in Bz(2)pipdt and mnt. These findings suggest assigning a dithiolato character to mnt (pull ligand) and a dithione one (push ligand) to Bz(2)pipdt. Cyclic voltammetry of 1-3 exhibits two reversible reduction waves and a broad irreversible oxidation wave. These complexes are characterized in the visible region by a peak of moderately strong intensity, which undergoes negative solvatochromism. The molecular quadratic optical nonlinearities were determined by the EFISH technique, which provided the following values μβ(λ) (10(-48) esu) = -1436 (1), -1450 (2), and -1950 (3) converted in μβ(0) (10(-48) esu) = -463 (1), -684 (2), and -822 (3), showing that these complexes exhibit large negative second-order polarizabilities whose values depend on the metal, being highest for the Pt compound. DFT and TD-DFT calculations on 1-3 allow us to correlate geometries and electronic structures. Moreover, the first molecular hyperpolarizabilities have been calculated, and the results obtained support that the most appealing candidate as a second-order NLO chromophore is the platinum compound. This is due to (i) the most extensive mixture of the dithione/metal/dithiolato orbitals, (ii) the influence of the electric field of the solvent on the frontier orbitals that maximizes the difference in dipole moments between the excited and the ground state, and (iii) the largest oscillator strength in the platinum case vs nickel and palladium ones.
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Affiliation(s)
- Luca Pilia
- Dipartimento di Chimica Inorganica ed Analitica, Università di Cagliari, I-09042 Monserrato (Cagliari) Italy
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Kubo K, Shiga T, Yamamoto T, Tajima A, Moriwaki T, Ikemoto Y, Yamashita M, Sessini E, Mercuri ML, Deplano P, Nakazawa Y, Kato R. Electronic State of a Conducting Single Molecule Magnet Based on Mn-salen Type and Ni-Dithiolene Complexes. Inorg Chem 2011; 50:9337-44. [DOI: 10.1021/ic200863c] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kazuya Kubo
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-Ku, Sendai, 980-8578 Miyagi, Japan
- Research Institute for Electronic Science, Hokkaido University, Kita 20 Nishi 10, Kita-ku, Sapporo 001-0020, Japan
| | - Takuya Shiga
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-Ku, Sendai, 980-8578 Miyagi, Japan
- Graduate School of Pure and Applied Science, University of Tsukuba, Tennodai 1-1-1, Tsukuba, 305-8571 Ibaraki, Japan
| | - Takashi Yamamoto
- Department of Chemistry, Graduate school of Science, Osaka University, 1-1, Machikaneyama, Toyonaka, 560-0043 Osaka, Japan
| | - Akiko Tajima
- RIKEN, 2-1, Hirosawa, Wako-shi, Saitama 351-0198, Japan
| | - Taro Moriwaki
- JASRI/SPring-8, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Yuka Ikemoto
- JASRI/SPring-8, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Masahiro Yamashita
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-Ku, Sendai, 980-8578 Miyagi, Japan
| | - Elisa Sessini
- Dipartimento di Chimica Inorganica ed Analitica, Universita di Cagliari, Cittadella di Monserrato, I-09042 Monserrato, Cagriari, Italy
| | - Maria Laura Mercuri
- Dipartimento di Chimica Inorganica ed Analitica, Universita di Cagliari, Cittadella di Monserrato, I-09042 Monserrato, Cagriari, Italy
| | - Paola Deplano
- Dipartimento di Chimica Inorganica ed Analitica, Universita di Cagliari, Cittadella di Monserrato, I-09042 Monserrato, Cagriari, Italy
| | - Yasuhiro Nakazawa
- Department of Chemistry, Graduate school of Science, Osaka University, 1-1, Machikaneyama, Toyonaka, 560-0043 Osaka, Japan
| | - Reizo Kato
- RIKEN, 2-1, Hirosawa, Wako-shi, Saitama 351-0198, Japan
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Artizzu F, Deplano P, Pilia L, Serpe A, Marchiò L, Bernot K, Mercuri ML. Croconato-containing M(III) (M = Ga, Er) complexes as potential building blocks for mono/multifunctional molecular materials. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.02.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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45
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Espa D, Pilia L, Marchiò L, Mercuri ML, Serpe A, Barsella A, Fort A, Dalgleish SJ, Robertson N, Deplano P. Redox-switchable chromophores based on metal (Ni, Pd, Pt) mixed-ligand dithiolene complexes showing molecular second-order nonlinear-optical activity. Inorg Chem 2011; 50:2058-60. [PMID: 21288030 DOI: 10.1021/ic102343g] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis and full characterization of the redox-active nickel triad mixed-ligand dithiolene complexes based on Bz(2)pipdt = 1,4-dibenzylpiperazine-3,2-dithione and dmit = 2-thioxo-1,3-dithiole-4,5-dithiolate ligands are reported. These complexes show a reversibly bleacheable solvatochromic peak and a remarkably high negative molecular first hyperpolarizability, whose values depend on the metal being highest for the platinum(II) compound.
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Affiliation(s)
- Davide Espa
- Dipartimento di Chimica Inorganica ed Analitica, Università di Cagliari, I-09042 Monserrato, Cagliari, Italy
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Mercuri ML, Deplano P, Pilia L, Serpe A, Artizzu F. Interactions modes and physical properties in transition metal chalcogenolene-based molecular materials. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2009.10.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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47
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Deplano P, Pilia L, Espa D, Mercuri ML, Serpe A. Square-planar d8 metal mixed-ligand dithiolene complexes as second order nonlinear optical chromophores: Structure/property relationship. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2009.12.022] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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48
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Bruno G, Almeida M, Artizzu F, Dias JC, Mercuri ML, Pilia L, Rovira C, Ribas X, Serpe A, Deplano P. Innocence and noninnocence of the ligands in bis(pyrazine-2,3-dithiolate and -diselonate) d8-metal complexes. A theoretical and experimental study for the Cu(iii), Au(iii) and Ni(ii) cases. Dalton Trans 2010; 39:4566-74. [DOI: 10.1039/b922626e] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Pilia L, Artizzu F, Espa D, Marchiò L, Mercuri ML, Serpe A, Deplano P. New sulfur-oxygen mixed-donor ligand N,N'-dimethyl-piperazine-3-oxo-2-thione (Me2pipto) and its Ni(ii) and Fe(ii) complexes. Dalton Trans 2010; 39:8139-42. [DOI: 10.1039/c0dt00803f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Dalgleish S, Morrison CA, Middlemiss DS, Mount AR, Collins A, Pilia L, Serpe A, Mercuri ML, Roberts-Bleming SJ, Charlton A, Deplano P, Murphy PJ, Robertson N. Synthesis, structure and spectroscopic properties of a new class of polymerisable nickel dithiolenes. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b907028a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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